text: /**
   * Copyright 2015 IBM Corp. All Rights Reserved.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  const pick = require('object.pick');
  const passport = require('passport');
  
  const twitterHelper = require('./helpers/twitter-helper');
  const personalityHelper = require('./helpers/personality-insights');
  const profileFromTweets = personalityHelper.profileFromTweets;
  const profileFromText = personalityHelper.profileFromText;
  
  module.exports = (app) => {
    // personality profile from text
    app.post('/api/profile/text', (req, res, next) =>
      profileFromText(req.body)
        .then(res.json.bind(res))
        .catch(next)
    );
  
    // personality profile from tweets
    app.post('/api/profile/twitter', (req, res, next) => {
      if (!req.body.userId) {
        return next({ code: 400, error: 'Missing required parameters: userId' });
      }
  
      const user = {
        credentials : req.user ? req.user.credentials : null,
        userId: req.body.userId,
      };
  
      return twitterHelper.getTweets(user)
        .then(profileFromTweets(req.body))
        .then(res.json.bind(res))
        .catch(next);
    });
  
    // twitter oauth
    app.get('/auth/twitter', passport.authenticate('twitter'));
    app.get('/auth/twitter/callback', passport.authenticate('twitter', {
      failureRedirect: '/#error',
      successRedirect: '/?source=myself'
    }));
  
    // home page
    app.get('/', (req, res) =>
      res.render('index', {
        twitterUser: req.query.source ==='myself' && req.user ? req.user.profile : {},
        showTwitterButton: !!process.env.TWITTER_CONSUMER_KEY
      })
    );
  
    // terms of use
    app.get('/terms-of-use', (req, res) => res.render('terms-of-use'));
  };
  